Issue: BBcodes not working

They aren't working because you deleted all of them. You will have to add them all manually now using vBulletin's BB-Code Manager. Then you will also have to update VaultWiki's Wiki Code Manager.

You can see a full list of the BB-Codes and their default values in vault/install/mysql-insert.php. Look for:
As your wiki linking codes will also be missing, you'll need to re-edit every namespace in the Namespace Manager and save them.

how much would it cost me to hire you to do it?

You can purchase an Install Service via the Members Area to cover this. I will recreate all the default values and regenerate your wiki link BB-Codes.

if i reinstall my wiki, will the bbcodes come back?

Yes, but you will lose data like books, headers, links, and old edits.

i have a database backup with all the wiki bbcodes and vb bbcodes, i can simply restore the tables from the backup to my current database. can you tell me which database tables should be restored?

Just the vBulletin bbcode table. After restoring, you will then have to save one of them to rebuild the cache.

thanks, it worked.